A nurse is caring for a client who has a new prescription for interferon beta-1a 11 mcg subcutaneous three times weekly. Available is interferon beta-1a injection 22 mcg/0.5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.25"]
To calculate the dosage of interferon beta-1a for the client, the nurse should use the following formula:
Dose (mL) = Desired dose (mcg) / Available dose (mcg/mL)
Plugging in the values from the prescription and the medication label, we get:
Dose (mL) = 11 mcg / 22 mcg/0.5 mL
Simplifying the fraction, we get:
Dose (mL) = 0.5 / 2
Dividing both sides by 2, we get:
Dose (mL) = 0.25
Therefore, the nurse should administer 0.25 mL of interferon beta-1a per dose.
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Related Questions
Correct Answer is C
Explanation
A. OZ: This abbreviation stands for ounces, which is a unit of volume commonly used to measure liquids.
B. "Lb" stands for pounds, which is another imperial unit of weight, not a metric unit.
C. "Mcg" stands for microgram, which is a metric unit of weight. It is commonly used in the measurement of small amounts of medications or substances..
D. ML: This abbreviation stands for milliliters, which is a unit of volume commonly used to measure liquids. One milliliter is equivalent to one cubic centimeter.
Correct Answer is ["8"]
Explanation
To give the client the correct dose of phenytoin, the nurse needs to calculate the volume of the oral suspension that contains 200 mg of the drug. The formula for this calculation is:
Volume (mL) = Dose (mg) / Concentration (mg/mL)
The concentration of the oral suspension is 125 mg/5 mL, which means that 1 mL contains 25 mg of phenytoin. Therefore, the nurse can substitute these values into the formula:
Volume (mL) = 200 mg / 25 mg/mL
Volume (mL) = 8 mL
Therefore, the nurse should administer 8 mL of the oral suspension to the client.
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